The hunt for missing Malaysia Airlines flight MH370 entered its fifth week on Saturday, no closer to an explanation for its disappearance.
The search planes and ships are still scouring the southern Indian Ocean
A device called the Towed Pinger Locator now seems the best hope for a breakthrough if they're in the right area.
It's being dragged through the water behind an Australian navy vessel trying to trace the missing plane's black box flight recorder.
It's a race against the clock.
The plane vanished on March 8th and the flight recorder only has power to send out location signals for about 30 days.
But aviation expert Geoffrey Thomas believes the search will be intensified as time goes on.
(SOUNDBITE)(English) GEOFFREY THOMAS, EDITOR OF AIRLINERATINGS.COM, SAYING:
"I think they're actually going to increase it. We shouldn't underestimate the will of the Australians and the will of the Chinese to find this aeroplane. We're talking about just the compassion of giving closure of the relatives and loved ones left behind, but there is also a lot of political will in this."
Malaysia's been accused of mismanaging the search and withholding information after the disappearance of the plane and its 239 passengers and crew.
Some in Kuala Lumpur feel the criticism is unfair.
(SOUNDBITE)(English) RUHAIBAH HASSAN, SHOPPER, SAYING:
"I feel very sad for our country. We cannot be blamed for the thing we cannot control."
A British submarine and a Malaysian frigate are the latest vessels due to join the international search shortly.